Explanation of Names
Dichomeris marginella (Fabricius, 1781)
Alucita marginella Fabricius, 1781
Ypsolophus marginella
* phylogentic sequence #070100
Size
Forewing length 5.5-8 mm.
(1)
Larva to 14 mm (Weiss & Lott, 1922).
Pupa about 5.5 mm (Weiss & Lott, 1922).
Identification
Larva - head dark reddish, body light brown with somewhat broken longitudinal stripes; median stripe reddish brown, submedian stripes whitish, sublateral dark brown, lateral stripes light reddish brown.
Range
Introduced from Europe several times. There have been adventive colonies in the Northeast, Midwest, and British Columbia south through California.
(1),
(2)Season
Adults are present during June and July.
(3)
Pupation occurs from mid May to early June.
(3)Life Cycle
Eggs are laid singly on terminal needles. Newly hatched larvae mine in the needles and later feed gregariously in webs. Pupation occurs in a silken web of tied needles (Weiss & Lott, 1922).
Print References
Beadle, D. & S. Leckie 2012. Peterson Field Guide to Moths of Northeastern North America. Houghton Mifflin. p.66-67 (
preview)
(4)
Fabricius, J.C. 1781. Species insectorum 2:
307
Hodges, R.W. 1986. Moths of America North of Mexico, Fascicle 7.1, p.46; pl.1.14
(5)
Powell, J.A. & P.A. Opler 2009. Moths of Western North America. University of California Press. p.102, pl.10.37m
(1)
Weiss, H.B. & R.B. Lott 1922. The Juniper Webworm,
Ypsolophus marginella Fabr. (Lepid., Gelechiidae). Entomological news, and proceedings of the Entomological Section of the Academy of Natural Sciences of Philadelphia 33(3):
80-82